CHAPMAN VACUUM HYDRO ASPIRATOR FILTER PUMP / HUMBOLDT Start Price USD 24.99 Current Price USD 24.99 Time Left 15 days 13 hours 5 minutes Bid Count 0 Buy It Now Price - Reserve Price - Start Time Saturday, September 27, 2008 End Time Sunday, January 25, 2009 Location Miller Place, New York See more about 'CHAPMAN VACUUM HYDRO ASPIRATOR FILTER PUMP / HUMBOLDT' Description Avogadro's Lab Supply Aspirator Vacuum Pump Offered here is a Chapmen hydro aspirator vacuum filter pump.  This unit is manufactured in the U.S.A. by Humboldt. The Chapmen aspirator is designed for greater air entrainment capacity and will perform under both high and low water pressure conditions.  The pump features a ball-type positive action valve in the suction tube which will prevent water backflow if the pressure is reduced. The body is a nickel plated white metal and the baffle tube is manufactured from aluminum.  The water inlet connection thread is a standard 3/8" NPT taper. Specifications:  Vacuum Inlet:  10 mm / .385" Water Outlet:     10 mm / .385" Length:   137 mm / 5 3/8" Vacuum generated  @ 30 psi 29.5" Hg At a water pressure of 30 psi this aspirator will reduce atmospheric pressure by 29.5" Hg. Standard pressure 29.92" Hg  = 1 atm                          - 29.50" Hg Net pressure =       0.42" Hg  = 0.014 atm The actual vacuum attained with this pump is directly proportional to the water pressure and current barometric pressure! Therefore, the amount of vacuum can be varied by adjusting the water pressure.  This pump can be used for siphoning, vacuum filtration and indirect fluid transport.    Also available is a short vacuum hydro aspirator with a serrated tail and side arm. Click for a Short Aspirator All merchandise offered by Avogadro's Lab Supply is New from the manufacturer! Do you have a question about a product or application? Ask a Chemistry Teacher! or call(631) 828- 4785    Don't forget to visit my for great deals on all your lab supply needs!!!     Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items. Place a Bid!